Feature●Polyethylene foam, urethane●Magnetic back included●Accessories: 5 white chalk, 1 yellow chalk (Japan Science Dust Chalk)●When replacing chalk, we recommend chalk with a diameter of 0.4 - 0.5 inches (11.2 - 12 mm)Description
A convenient teaching tool that allows you to draw parallel lines evenly between the chalkboards in 2 seconds with one hand.